Pump valve



March 19, 1929. s AKEYSON 1,705,800

PUMP VALVE Filed April 21, 1928 INVENTOR.

SWAN I'LAKEYSON Patented Mar. 19, 1929.

SWAN M. AKEYSON, or Lone amen, camronma.

PUMP VALVE.

Application filed spin 21,

This invention relates toa'valve particularly applicable to sludge pumps or other pumps carrying a high pressure and operating with a liquid containing coarse particles.

An object of my invention-is to provide a valve having a rubber ring therein, which ring does not carry the full weight of the valve when the valve seats.

An advantage of the above mentioned arrangement is that; the rubber ring will not hammer out as rapidly as in valves heretofore in use.

A further object of m invention is to provide a valve which can e quickly and easily assembled or disassembled for purposes of repair and replacement.

Other objects, advantages, and features of the invention may a pear in the accompanying drawing, the su joined detailed description and the appended claims.

In the drawing- Fig. 1, is a side elevation of my valve.

Fig. 2, is a longitudinal sectional view of the same. a

Referring more particularly to the drawing, the numeral 1 indicates the valve, head,

u on which the tapered seat 2 is formed. e head 1 and seat 2 are formed of metal and this seat provides the final seal as will be'further described.

Aplurality of guide Wings 3, depend from the head '1, for the purpose of guiding the valve inits movement, all of which is usual and Well known in the art.

A pin 4 rises from the head 1 and'is preferably formed integral therewith which providesa very simple and inexpensive arrangement and one which is easily cast and machined.

A central bore 5 is formcdin the pin 4, the purpose of which will be further described. A cap 6 rests on the head 1 and 1s shdably mounted on the pin 4. A rubber ring 7 is reinovably mounted in the cap 6, and the outer periphery of the ring projects beyond the seat 2, so that the ring will first engage the seat in the pump. The advantage of this Wlll be further described.

An annular groove 8 is provided 1n the head 1 to receive a bead 9 formed on the r ng 7 to limit the upward slidable movement of the cap 6. On the pin 4 I provide a key 10 1928. Serial No. 271,699.

which extends through a bore 11 in the pin 4 and intersects the bore 5. An advantage of this last mentioned arrangement is to break the vacuum caused by the reciprocation of the pin 4. In a groove such as is used in Well known types of pumps, the'key 10 is positioned slightly above the top o-the cap 6 so that this cap can move upwardly when the ring 7 strikes the seat in the pump thus permitting the the final seal. The advantage of the movable cap is that the full weight of the valve does not rest upon the ring 7 as the valve is closed the rubber ring carrying only the weight of the cap which being comparatively light materially increases the life of the ring which is not hammeredto pieces or compressed due to heavy blows and great weight. When it is necessary to disassemble the valve to replace the rubber ring or th'elike, it is only necessary to remove thekey and slide the cap; 6 0E of the stem 4, Which releases the rubber ring and it can be quickly replaced and the parts again assembled.

Having described my invention, I claim:

1. A valve comprising a head, a stem rising from the. head, a cap slidably mounted on the stem and a rubber ring mounted in the cap and adapted'to engage the seat upon which the valve rests.

2. A. valve comprising a head, a stem rising from the head, a cap slidably mounted on the stem and a rubber ring mounted in metaLseat 2-to engage and make the cap and adapted to engage the seat upon- I which thevalve rests, and a key extending through the stem above the cap to limit the upward movement thereof. 1

3. A valve comprising a head, a stem integral with the head andrising therefrom, a cap slidably mounted on the stem, a tapered seat on the head, a rubber ring in the cap, said ring normally projecting beyond the surface of the seat on the head.

4. A valve comprising a head, a stem integral with the head and rising therefrom, a cap slidably mounted on the stem, a tapered seat on the head, a rubber ring in the cap, said ring normally projecting beyond the surface of the seat on the head, a key extending through the stem above the cap to limit the upward movement thereof.

upward movement thereof, said head having an annular groove therein on the top thereof, a head on the ring adapted to rest in the groove and a longitudinally extending bore in the stem.

In testimony WlBIGOf, I affix my signature.

WAN M. .AKEYSON. 

